“Think of landscape. Think of how elements come to be attached to one another, how it’s impossible to separate the road from the field, the field from the tree, the tree from the water, the water from the sky. We cannot attribute natural features to the lines we design just as we cannot attribute natural causes to those dying as they try to cross them.” For Tin House, Portuguese writer Susana Moreira Marques meditates on the concept of borders and Wolf Böwig’s photography project, “Borders and Beyond.”